Upper : C.W.L. (organic cotton coated with a resin from P.U., corn starch and ricinus oil). Panels : C.W.L.. Logo V : Rubber and rice waste (22%). Insole : Amazonian rubber, sugar cane, recycled E.V.A.* and organic cotton. Outsole : Amazonian rubber (31%), rice waste (22%) and recycled rubber (12%). Lining : Tech (100% recycled polyester). Laces : Organic cotton (100%). Made in BrazilC.W.L. : Cotton Worked as Leather.. This material is a vegan alternative to leather. A 100% organic cotton canvas, coated with P.U., corn starch and ricinus oil. 54% bio-based.*ethylene vinyl acetate